org.extex.unit.omega.math.delimiter
Class AbstractOmegaDelimiter

java.lang.Object
  org.extex.interpreter.type.AbstractCode
      org.extex.unit.tex.math.AbstractMathCode
          org.extex.unit.omega.math.delimiter.AbstractOmegaDelimiter

All Implemented Interfaces:

java.io.Serializable, Code

Direct Known Subclasses:

Odelimiter, Oradical

public abstract class AbstractOmegaDelimiter
extends AbstractMathCode

This abstract class adds the ability to translate MathDelimiters to and from their Omega encoding as numbers to abstract math code.

Version:

$Revision:4431 $

Author:

Gerd Neugebauer

See Also:

Serialized Form

Field Summary

protected static long

serialVersionUID The constant serialVersionUID contains the id for serialization.

Constructor Summary

AbstractOmegaDelimiter(CodeToken token)
Creates a new object.

Method Summary

static long	delimiterToLong(MathDelimiter del) Translate the delimiter into a Omega encoded number or throw an exception if this is not possible.
protected static Localizer	getMyLocalizer() Create a localizer for this class.
static MathDelimiter	newMathDelimiter(long delcode) Creates a new MathDelimiter object from the Omega encoding.
static MathDelimiter	parseDelimiter(Context context, TokenSource source, Typesetter typesetter, CodeToken primitive) Parse a math delimiter.

Methods inherited from class org.extex.unit.tex.math.AbstractMathCode

getListMaker

Methods inherited from class org.extex.interpreter.type.AbstractCode

execute, getLocalizer, getName, getToken, isIf, isOuter, readResolve, toString, toText, toText

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

serialVersionUID

protected static final long serialVersionUID

The constant serialVersionUID contains the id for serialization.

See Also:

Constant Field Values

Constructor Detail

AbstractOmegaDelimiter

public AbstractOmegaDelimiter(CodeToken token)

Creates a new object.

Parameters:

token - the initial token for the primitive

Method Detail

getMyLocalizer

protected static Localizer getMyLocalizer()

Create a localizer for this class.

Returns:

the localizer

newMathDelimiter

public static MathDelimiter newMathDelimiter(long delcode)
                                      throws HelpingException

Creates a new MathDelimiter object from the Omega encoding.

The TeX encoding interprets the number as 27 bit hex number: "cssyyyyllxxxx. Here the digits have the following meaning:

c

the math class of this delimiter. It has a range from 0 to 7.

ll

the family for the large character. It has a range from 0 to 255.

xxxx

the character code of the large character.

ss

the family for the small character. It has a range from 0 to 255.

yyyy

the character code of the small character.

Parameters:

delcode - the Omega encoding for the delimiter

Returns:

a new MathDelimiter

Throws:

HelpingException - in case of a parameter out of range

parseDelimiter

public static MathDelimiter parseDelimiter(Context context,
                                           TokenSource source,
                                           Typesetter typesetter,
                                           CodeToken primitive)
                                    throws ConfigurationException,
                                           HelpingException,
                                           TypesetterException

Parse a math delimiter.

  \delimiter"1234567
  \delimiter open 22 `[ 1 `(
 

Parameters:

context - the interpreter context

source - the token source to read from

typesetter - the typesetter

primitive - the name of the primitive for error handling

Returns:

the MathDelimiter acquired

Throws:

ConfigurationException - in case of an configuration error

HelpingException - in case of an error

TypesetterException - in case of an error in the typesetter

delimiterToLong

public static long delimiterToLong(MathDelimiter del)
                            throws HelpingException

Translate the delimiter into a Omega encoded number or throw an exception if this is not possible.

Parameters:

del - the delimiter to encode

Returns:

the Omega encoded delimiter

Throws:

HelpingException - in case of an error